document.write( "Question 1056515: Each letter of the word LEARN is printed on one of 5 cards. How many 3-,4-,or 5-letter code words can be formed? \r
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Algebra.Com's Answer #671629 by Edwin McCravy(20060)\"\" \"About 
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document.write( "3-letter codes:\r\n" );
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document.write( "Choose the first card 5 ways.\r\n" );
document.write( "Choose the second card any of the remaining 4 ways.\r\n" );
document.write( "Choose the third card any of the remaining 3 ways.\r\n" );
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document.write( "That's 5*4*3 = 60\r\n" );
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document.write( "4-letter codes:\r\n" );
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document.write( "Choose the first card 5 ways.\r\n" );
document.write( "Choose the second card any of the remaining 4 ways.\r\n" );
document.write( "Choose the third card any of the remaining 3 ways.\r\n" );
document.write( "Choose the fourth card either of the remaining 2 ways.\r\n" );
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document.write( "That's 5*4*3*2 = 120\r\n" );
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document.write( "5-letter codes:\r\n" );
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document.write( "Choose the first card 5 ways.\r\n" );
document.write( "Choose the second card any of the remaining 4 ways.\r\n" );
document.write( "Choose the third card any of the remaining 3 ways.\r\n" );
document.write( "Choose the fourth card either of the remaining 2 ways.\r\n" );
document.write( "Choose the fifth card that 1 remaining way.\r\n" );
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document.write( "That's 5*4*3*2*1 = 120\r\n" );
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document.write( "[Notice that the number of 5-letter codes is the same\r\n" );
document.write( "as the number of 4-letter codes, because for every 4-letter\r\n" );
document.write( "code, just tack on the remaining card and you have a 5-letter\r\n" );
document.write( "code.]\r\n" );
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document.write( "Edwin
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